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minecraft-pi-reborn/mods/src/textures/lava.cpp

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#include <cmath>
#include <libreborn/libreborn.h>
#include <symbols/minecraft.h>
#include "textures-internal.h"
// Lava texture code was originally decompield by @iProgramMC as part of ReMinecraftPE.
// See: https://github.com/ReMinecraftPE/mcpe
// Structures
struct LavaTexture {
DynamicTexture super;
int field_14;
int field_18;
float m_data1[256];
float m_data2[256];
float m_data3[256];
float m_data4[256];
};
struct LavaSideTexture {
DynamicTexture super;
int field_14;
int field_18;
int field_1C;
float m_data1[256];
float m_data2[256];
float m_data3[256];
float m_data4[256];
};
struct FireTexture {
DynamicTexture super;
float m_data1[320];
float m_data2[320];
Random m_random;
};
// LavaTexture
CUSTOM_VTABLE(lava_texture, DynamicTexture) {
vtable->tick = [](DynamicTexture *super) {
LavaTexture *self = (LavaTexture *) super;
for (int x = 0; x < 16; x++) {
for (int y = 0; y < 16; y++) {
float f = 0.0F;
int ax = int(Mth_sin((float(x) * float(M_PI) * 2) / 16.0f) * 1.2f);
int ay = int(Mth_sin((float(y) * float(M_PI) * 2) / 16.0f) * 1.2f);
for (int bx = x - 1; bx <= x + 1; bx++) {
for (int by = y - 1; by <= y + 1; by++) {
int k2 = (bx + ay) & 0xf;
int i3 = (by + ax) & 0xf;
f += self->m_data1[k2 + i3 * 16];
}
}
self->m_data2[x + y * 16] = f / 10.0f + ((self->m_data3[(x & 0xf) + ((y + 0) & 0xf) * 16] + self->m_data3[((x + 1) & 0xf) + (y & 0xf) * 16] + self->m_data3[((x + 1) & 0xf) + ((y + 1) & 0xf) * 16] + self->m_data3[(x & 0xf) + ((y + 1) & 0xf) * 16]) * 0.25f) * 0.8f;
self->m_data3[x + y * 16] += self->m_data4[x + y * 16] * 0.01f;
if (self->m_data3[x + y * 16] < 0.0f) {
self->m_data3[x + y * 16] = 0.0f;
}
self->m_data4[x + y * 16] -= 0.06f;
if (Mth_random() < 0.005f) {
self->m_data4[x + y * 16] = 1.5f;
}
}
}
std::swap(self->m_data1, self->m_data2);
for (int i = 0; i < 256; i++) {
float x1 = self->m_data1[i] * 2.0f;
if (x1 > 1.0f) {
x1 = 1.0f;
}
if (x1 < 0.0f) {
x1 = 0.0f;
}
self->super.pixels[i * 4 + 0] = int(155.0f + 100.0f * x1);
self->super.pixels[i * 4 + 1] = int(255.0f * x1 * x1);
self->super.pixels[i * 4 + 2] = int(128.0f * x1 * x1 * x1 * x1);
self->super.pixels[i * 4 + 3] = 255;
}
};
}
static DynamicTexture *create_lava_texture() {
// Construct
LavaTexture *texture = new LavaTexture;
ALLOC_CHECK(texture);
DynamicTexture_constructor(&texture->super, Tile_lava->texture);
// Set VTable
texture->super.vtable = get_lava_texture_vtable();
// Setup
texture->field_14 = 0;
texture->field_18 = 0;
for (int i = 0; i < 256; i++) {
texture->m_data1[i] = 0.0f;
texture->m_data2[i] = 0.0f;
texture->m_data3[i] = 0.0f;
texture->m_data4[i] = 0.0f;
}
// Return
return (DynamicTexture *) texture;
}
// LavaSideTexture
CUSTOM_VTABLE(lava_side_texture, DynamicTexture) {
vtable->tick = [](DynamicTexture *super) {
LavaSideTexture *self = (LavaSideTexture *) super;
self->field_1C++;
for (int x = 0; x < 16; x++) {
for (int y = 0; y < 16; y++) {
float f = 0.0F;
int ax = int(Mth_sin((float(x) * float(M_PI) * 2) / 16.0f) * 1.2f);
int ay = int(Mth_sin((float(y) * float(M_PI) * 2) / 16.0f) * 1.2f);
for (int bx = x - 1; bx <= x + 1; bx++) {
for (int by = y - 1; by <= y + 1; by++) {
int k2 = (bx + ay) & 0xf;
int i3 = (by + ax) & 0xf;
f += self->m_data1[k2 + i3 * 16];
}
}
self->m_data2[x + y * 16] = f / 10.0f + ((self->m_data3[(x & 0xf) + ((y + 0) & 0xf) * 16] + self->m_data3[((x + 1) & 0xf) + (y & 0xf) * 16] + self->m_data3[((x + 1) & 0xf) + ((y + 1) & 0xf) * 16] + self->m_data3[(x & 0xf) + ((y + 1) & 0xf) * 16]) * 0.25f) * 0.8f;
self->m_data3[x + y * 16] += self->m_data4[x + y * 16] * 0.01f;
if (self->m_data3[x + y * 16] < 0.0f) {
self->m_data3[x + y * 16] = 0.0f;
}
self->m_data4[x + y * 16] -= 0.06f;
if (Mth_random() < 0.005f) {
self->m_data4[x + y * 16] = 1.5f;
}
}
}
std::swap(self->m_data1, self->m_data2);
for (int i = 0; i < 256; i++) {
float x1 = self->m_data1[(i - 16 * (self->field_1C / 3)) & 0xFF] * 2.0f;
if (x1 > 1.0f) {
x1 = 1.0f;
}
if (x1 < 0.0f) {
x1 = 0.0f;
}
self->super.pixels[i * 4 + 0] = int(155.0f + 100.0f * x1);
self->super.pixels[i * 4 + 1] = int(255.0f * x1 * x1);
self->super.pixels[i * 4 + 2] = int(128.0f * x1 * x1 * x1 * x1);
self->super.pixels[i * 4 + 3] = 255;
}
};
}
static DynamicTexture *create_lava_side_texture() {
// Construct
LavaSideTexture *texture = new LavaSideTexture;
ALLOC_CHECK(texture);
DynamicTexture_constructor(&texture->super, Tile_lava->texture + 1);
// Set VTable
texture->super.vtable = get_lava_side_texture_vtable();
// Setup
texture->field_14 = 0;
texture->field_18 = 0;
texture->field_1C = 0;
texture->super.texture_size = 2;
for (int i = 0; i < 256; i++) {
texture->m_data1[i] = 0.0f;
texture->m_data2[i] = 0.0f;
texture->m_data3[i] = 0.0f;
texture->m_data4[i] = 0.0f;
}
// Return
return (DynamicTexture *) texture;
}
// FireTexture
CUSTOM_VTABLE(fire_texture, DynamicTexture) {
vtable->tick = [](DynamicTexture *super) {
FireTexture *self = (FireTexture *) super;
for (int i = 0; i < 16; i++) {
for (int j = 0; j < 20; j++) {
int l = 18;
float f1 = self->m_data1[i + ((j + 1) % 20) * 16] * l;
for (int i1 = i - 1; i1 <= i + 1; i1++) {
for (int k1 = j; k1 <= j + 1; k1++) {
int i2 = i1;
int k2 = k1;
if (i2 >= 0 && k2 >= 0 && i2 < 16 && k2 < 20)
{
f1 += self->m_data1[i2 + k2 * 16];
}
l++;
}
}
self->m_data2[i + j * 16] = f1 / 25.2f;
if (j >= 19) {
union {
uint32_t x;
uint8_t b[4];
} a;
a.x = Random_genrand_int32(&self->m_random);
self->m_data2[i + j * 16] = 0.2f + (((a.b[3] / 256.0f) * 0.1f) + ((((a.b[0] / 256.0f) * (a.b[1] / 256.0f)) * (a.b[2] / 256.0f)) * 4.0f));
}
}
}
std::swap(self->m_data1, self->m_data2);
for (int i = 0; i < 256; i++) {
float x = self->m_data1[i] * 1.8f;
if (x > 1.0f) {
x = 1.0f;
}
if (x < 0.0f) {
x = 0.0f;
}
self->super.pixels[4 * i + 0] = int(x * 155.0f + 100.0f);
self->super.pixels[4 * i + 1] = int(x * x * 255.0f);
self->super.pixels[4 * i + 2] = int(x * x * x * x * x * x * x * x * x * x * 255.0f);
self->super.pixels[4 * i + 3] = x >= 0.5f ? 255 : 0;
}
};
}
static DynamicTexture *create_fire_texture(int a2) {
// Construct
FireTexture *texture = new FireTexture;
ALLOC_CHECK(texture);
DynamicTexture_constructor(&texture->super, Tile_fire->texture + (16 * a2));
// Set VTable
texture->super.vtable = get_fire_texture_vtable();
// Setup Random
int seed = Common_getTimeMs();
texture->m_random.seed = seed;
texture->m_random.param_1 = 0x271;
texture->m_random.param_2 = false;
texture->m_random.param_3 = 0;
for (int i = 0; i < 320; i++) {
texture->m_data1[i] = 0.0f;
texture->m_data2[i] = 0.0f;
}
// Return
return (DynamicTexture *) texture;
}
// Add Textures
static bool animated_water = false;
static bool animated_lava = false;
static bool animated_fire = false;
static void Textures_addDynamicTexture_injection(Textures *textures, DynamicTexture *dynamic_texture) {
// Call Original Method
if (animated_water) {
Textures_addDynamicTexture(textures, dynamic_texture);
}
// Add Lava
if (animated_lava) {
Textures_addDynamicTexture(textures, create_lava_texture());
Textures_addDynamicTexture(textures, create_lava_side_texture());
}
if (animated_fire) {
Textures_addDynamicTexture(textures, create_fire_texture(0));
Textures_addDynamicTexture(textures, create_fire_texture(1));
}
}
// Init
void _init_textures_lava(bool animated_water_param, bool animated_lava_param, bool animated_fire_param) {
animated_water = animated_water_param;
animated_lava = animated_lava_param;
animated_fire = animated_fire_param;
overwrite_call((void *) 0x170b4, (void *) Textures_addDynamicTexture_injection);
}
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